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(February 2009) ()
A Hyper NeoGeo 64 board.
The Hyper Neo Geo 64 is an
created by , and released in September 1997, as the successor of the , within the .
It is the first and only SNK
set capable of
in , and was meant to replace SNK's older MVS system on the market. Company executives planned for the project to bring SNK into the new era of 3D gaming that had arisen during the mid-1990s, and had planned for a corresponding home system to replace the aging and expensive
home console.
Although details regarding the planned home system are sparse, it is believed that like the AES console, much of the hardware from the Neo Geo 64 arcade platform would also have been present in the home system, meaning gameplay would be identical or nearly identical whether a given game was played at home or in the arcade. It is unknown what media the home system would have used.
However it never managed to match the huge success of the MVS, and reached its end of life in 1999. Only seven games were produced for the arcade variation of the system, none of which proved particularly popular, and the project was discontinued. The proposed home system never got beyond initial planning stages and only one of the arcade games, , has been ported to home systems.
The Hyper Neo Geo 64 was conceived to bring SNK into the 3D era as well as to replace their aging
home system.
The system was first announced in late 1995, and planned for release in late 1996. It was officially unveiled at the February 1997 AOU show, though all that was demonstrated at the show was a videotape containing a few seconds of footage of , which SNK announced would be the first game for the system.
The arcade version of the system was released in September 1997, featuring a custom , 4
of program memory, 64 megabytes of 3D and texture memory, and 128 megabytes of memory for 2D characters and backgrounds. The first title released for the system was Road's Edge, with Samurai Shodown 64 and
following soon after. None were particularly well received.
By 1999, the system was discontinued, with only seven games released in total. Fatal Fury: Wild Ambition was ported to the Sony
home system.
CPU #1 (main): 100 MHz NEC
(64-bit MIPS III)
CPU #2 (auxiliary, handles audio I/O): V53@16 MHz 16-bit microcontroller ( superset)
CPU #3 (auxiliary, handles communications I/O): KL5C80A12CFP@12.5 MHz 8-bit microcontroller ( compatible)
0xx00FFFFFF: mainboard
0xx05FFFFFF: cartridge RAM (16 MiB)
0x1FC0FC7FFFF:
Cartridge ROM mapping is variable.
: 32-channel
audio, with maximum
frequency of 44.1 kHz (CD-quality) and 32
of sample RAM
Color : 16.7 million
Maximum onscreen color palette: 4,096
3D Branch: 96 MB vertex memory, 16 MB maximum texture memory
2D sprite branch: 60 frames per second animation, 128 MB character memory
Main functions: scaling, montage, chain, mosaic, mesh, action, up/down, right/left reverse
2D scrolling branch: Up to 4 game planes, 64 MB character memory
Main functions: scaling, revolution, horizontal/vertical screen partitioning and line scrolling
When powering a Hyper Neo Geo 64 board all four +5v pins on the JAMMA connector (3,4,C,D) must have +5v going to them. This is due to the double layer board design of the Hyper Neo Geo 64.
Correctly powered boards will display a blue screen with white text as the board and game boot up. If not powered properly, only a blue screen will be displayed.
The board has four versions: one which only plays the one which only plays t one which only plays Beast Busters: Second Nightmare; and one which only plays the two
The fighting game board has two revisions. While looking like one, the first revision is not true , as the sound does not come from the JAMMA edge but from an AMP connector mounted on the front of the board, which is controlled by a . There is a modification available to get mono sound off the JAMMA edge which involves removing a jumper and setting another. There is also an extra +5v connector that is supposed to be connected to the back of the board to "prolong" the life of the board per SNK. It is still unconfirmed if having the extra +5v connector connected actually does increase the board's life. Some say it is to divert the heat of the high amps going through the JAMMA edge.
The second board revision is true JAMMA and also has a switch to select between JAMMA output as well as MVS output, which has stereo sound.
Revision 1 has a volume port and amp connectors on the front, while the Revision 2 board has only amp connectors (around five) on the front of the board.
Seven games were released, all developed and published by SNK.
Release date
: Second Nightmare
September 11, 1998
May 21, 1999
January 28, 1999
Road's Edge
September 10, 1997
December 19, 1997
October 16, 1998
Xtreme Rally
May 13, 1998
Webb, Marcus (December 1995). "Arcadia". . No. 12. . p. 28.
"AOU". . No. 93. . April 1997. p. 79.
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